void
httpHeaderPutTime(HttpHeader * hdr, http_hdr_type id, time_t htime)
{
assert_eid(id);
assert(Headers[id].type == ftDate_1123); /* must be of an appropriate type */
assert(htime >= 0);
httpHeaderAddEntry(hdr, httpHeaderEntryCreate(id, NULL, mkrfc1123(htime)));
}
static void
print_trailer(void)
{
printf("<HR>\n");
printf("<ADDRESS>\n");
printf("Generated %s, by %s/%s@%s\n",
mkrfc1123(now), progname, SQUID_VERSION, getfullhostname());
printf("</ADDRESS></BODY></HTML>\n");
}
static void
gopherHTMLFooter(StoreEntry * e)
{
storeAppendPrintf(e, "<HR noshade size=\"1px\">\n");
storeAppendPrintf(e, "<ADDRESS>\n");
storeAppendPrintf(e, "Generated %s by %s (%s)\n",
mkrfc1123(squid_curtime),
getMyHostname(),
visible_appname_string);
storeAppendPrintf(e, "</ADDRESS></BODY></HTML>\n");
}
/* create MIME Header for Gopher Data */
static void
gopherMimeCreate(GopherStateData * gopherState)
{
MemBuf mb;
memBufDefInit(&mb);
memBufPrintf(&mb,
"HTTP/1.0 200 OK Gatewaying\r\n"
"Server: Squid/%s\r\n"
"Date: %s\r\n"
"MIME-version: 1.0\r\n",
version_string, mkrfc1123(squid_curtime));
switch (gopherState->type_id) {
case GOPHER_DIRECTORY:
case GOPHER_INDEX:
case GOPHER_HTML:
case GOPHER_WWW:
case GOPHER_CSO:
memBufPrintf(&mb, "Content-Type: text/html\r\n");
break;
case GOPHER_GIF:
case GOPHER_IMAGE:
case GOPHER_PLUS_IMAGE:
memBufPrintf(&mb, "Content-Type: image/gif\r\n");
break;
case GOPHER_SOUND:
case GOPHER_PLUS_SOUND:
memBufPrintf(&mb, "Content-Type: audio/basic\r\n");
break;
case GOPHER_PLUS_MOVIE:
memBufPrintf(&mb, "Content-Type: video/mpeg\r\n");
break;
case GOPHER_MACBINHEX:
case GOPHER_DOSBIN:
case GOPHER_UUENCODED:
case GOPHER_BIN:
/* Rightnow We have no idea what it is. */
gopher_mime_content(&mb, gopherState->request, def_gopher_bin);
break;
case GOPHER_FILE:
default:
gopher_mime_content(&mb, gopherState->request, def_gopher_text);
break;
}
memBufPrintf(&mb, "\r\n");
EBIT_CLR(gopherState->entry->flags, ENTRY_FWD_HDR_WAIT);
storeAppend(gopherState->entry, mb.buf, mb.size);
memBufClean(&mb);
}
int
main()
{
char *x;
time_t t, pt;
t = time(NULL);
x = mkrfc1123(t);
printf("HTTP Time: %s\n", x);
pt = parse_rfc1123(x);
printf("Parsed: %d vs. %d\n", pt, t);
}
static const char *
errorConvert(char token, ErrorState * err)
{
request_t *r = err->request;
static MemBuf mb = MemBufNULL;
const char *p = NULL; /* takes priority over mb if set */
int do_quote = 1;
memBufReset(&mb);
switch (token) {
case 'a':
if (r && r->auth_user_request)
p = authenticateUserRequestUsername(r->auth_user_request);
if (!p)
p = "-";
break;
case 'B':
p = r ? ftpUrlWith2f(r) : "[no URL]";
break;
case 'c':
p = errorPageName(err->type);
break;
case 'e':
memBufPrintf(&mb, "%d", err->xerrno);
break;
case 'E':
if (err->xerrno)
memBufPrintf(&mb, "(%d) %s", err->xerrno, strerror(err->xerrno));
else
memBufPrintf(&mb, "[No Error]");
break;
case 'f':
/* FTP REQUEST LINE */
if (err->ftp.request)
p = err->ftp.request;
else
p = "nothing";
break;
case 'F':
/* FTP REPLY LINE */
if (err->ftp.request)
p = err->ftp.reply;
else
p = "nothing";
break;
case 'g':
/* FTP SERVER MESSAGE */
wordlistCat(err->ftp.server_msg, &mb);
break;
case 'h':
memBufPrintf(&mb, "%s", getMyHostname());
break;
case 'H':
if (r) {
if (r->hier.host)
p = r->hier.host;
else
p = r->host;
} else
p = "[unknown host]";
break;
case 'i':
memBufPrintf(&mb, "%s", inet_ntoa(err->src_addr));
break;
case 'I':
if (r && r->hier.host) {
memBufPrintf(&mb, "%s", r->hier.host);
} else
p = "[unknown]";
break;
case 'L':
if (Config.errHtmlText) {
memBufPrintf(&mb, "%s", Config.errHtmlText);
do_quote = 0;
} else
p = "[not available]";
break;
case 'm':
p = authenticateAuthUserRequestMessage(err->auth_user_request) ? authenticateAuthUserRequestMessage(err->auth_user_request) : "[not available]";
break;
case 'M':
p = r ? RequestMethods[r->method].str : "[unknown method]";
break;
case 'o':
p = external_acl_message;
if (!p)
p = "[not available]";
break;
case 'p':
if (r) {
memBufPrintf(&mb, "%d", (int) r->port);
} else {
p = "[unknown port]";
}
break;
case 'P':
p = r ? ProtocolStr[r->protocol] : "[unkown protocol]";
break;
case 'R':
if (NULL != r) {
Packer p;
memBufPrintf(&mb, "%s %s HTTP/%d.%d\n",
RequestMethods[r->method].str,
strLen(r->urlpath) ? strBuf(r->urlpath) : "/",
r->http_ver.major, r->http_ver.minor);
packerToMemInit(&p, &mb);
httpHeaderPackInto(&r->header, &p);
packerClean(&p);
} else if (err->request_hdrs) {
p = err->request_hdrs;
} else {
p = "[no request]";
}
break;
case 's':
p = visible_appname_string;
break;
case 'S':
/* signature may contain %-escapes, recursion */
if (err->page_id != ERR_SQUID_SIGNATURE) {
const int saved_id = err->page_id;
MemBuf sign_mb;
err->page_id = ERR_SQUID_SIGNATURE;
sign_mb = errorBuildContent(err);
memBufPrintf(&mb, "%s", sign_mb.buf);
memBufClean(&sign_mb);
err->page_id = saved_id;
do_quote = 0;
} else {
/* wow, somebody put %S into ERR_SIGNATURE, stop recursion */
p = "[%S]";
}
break;
case 't':
memBufPrintf(&mb, "%s", mkhttpdlogtime(&squid_curtime));
break;
case 'T':
memBufPrintf(&mb, "%s", mkrfc1123(squid_curtime));
break;
case 'U':
p = r ? urlCanonicalClean(r) : err->url ? err->url : "[no URL]";
break;
case 'u':
p = r ? urlCanonical(r) : err->url ? err->url : "[no URL]";
break;
case 'w':
if (Config.adminEmail)
memBufPrintf(&mb, "%s", Config.adminEmail);
else
p = "[unknown]";
break;
case 'z':
if (err->dnsserver_msg)
p = err->dnsserver_msg;
else
p = "[unknown]";
break;
case '%':
p = "%";
break;
default:
memBufPrintf(&mb, "%%%c", token);
do_quote = 0;
break;
}
if (!p)
p = mb.buf; /* do not use mb after this assignment! */
assert(p);
debug(4, 3) ("errorConvert: %%%c --> '%s'\n", token, p);
if (do_quote)
p = html_quote(p);
return p;
}
int
main(int argc, char *argv[])
{
int conn, c, len, bytesWritten;
int port, to_stdout, reload;
int ping, pcount;
int keep_alive = 0;
int opt_noaccept = 0;
int opt_verbose = 0;
const char *hostname, *localhost;
char url[BUFSIZ], msg[BUFSIZ], buf[BUFSIZ];
char extra_hdrs[BUFSIZ];
const char *method = "GET";
extern char *optarg;
time_t ims = 0;
int max_forwards = -1;
struct timeval tv1, tv2;
int i = 0, loops;
long ping_int;
long ping_min = 0, ping_max = 0, ping_sum = 0, ping_mean = 0;
char *proxy_user = NULL;
char *proxy_password = NULL;
char *www_user = NULL;
char *www_password = NULL;
/* set the defaults */
hostname = "localhost";
localhost = NULL;
extra_hdrs[0] = '\0';
port = CACHE_HTTP_PORT;
to_stdout = 1;
reload = 0;
ping = 0;
pcount = 0;
ping_int = 1 * 1000;
if (argc < 2) {
usage(argv[0]); /* need URL */
} else if (argc >= 2) {
strncpy(url, argv[argc - 1], BUFSIZ);
url[BUFSIZ - 1] = '\0';
if (url[0] == '-')
usage(argv[0]);
while ((c = getopt(argc, argv, "ah:l:P:i:km:p:rsvt:g:p:I:H:T:u:U:w:W:?")) != -1)
switch (c) {
case 'a':
opt_noaccept = 1;
break;
case 'h': /* remote host */
if (optarg != NULL)
hostname = optarg;
break;
case 'l': /* local host */
if (optarg != NULL)
localhost = optarg;
break;
case 's': /* silent */
to_stdout = 0;
break;
case 'k': /* backward compat */
keep_alive = 1;
break;
case 'r': /* reload */
reload = 1;
break;
case 'p': /* port number */
sscanf(optarg, "%d", &port);
if (port < 1)
port = CACHE_HTTP_PORT; /* default */
break;
case 'P':
put_file = xstrdup(optarg);
break;
case 'i': /* IMS */
ims = (time_t) atoi(optarg);
break;
case 'm':
method = xstrdup(optarg);
break;
case 't':
method = xstrdup("TRACE");
max_forwards = atoi(optarg);
break;
case 'g':
ping = 1;
pcount = atoi(optarg);
to_stdout = 0;
break;
case 'I':
if ((ping_int = atoi(optarg) * 1000) <= 0)
usage(argv[0]);
break;
case 'H':
if (strlen(optarg)) {
char *t;
strncpy(extra_hdrs, optarg, sizeof(extra_hdrs));
while ((t = strstr(extra_hdrs, "\\n")))
*t = '\r', *(t + 1) = '\n';
}
break;
case 'T':
io_timeout = atoi(optarg);
break;
case 'u':
proxy_user = optarg;
break;
case 'w':
proxy_password = optarg;
break;
case 'U':
www_user = optarg;
break;
case 'W':
www_password = optarg;
break;
case 'v':
/* undocumented: may increase verb-level by giving more -v's */
opt_verbose++;
break;
case '?': /* usage */
default:
usage(argv[0]);
break;
}
}
#ifdef _SQUID_MSWIN_
{
WSADATA wsaData;
WSAStartup(2, &wsaData);
}
#endif
/* Build the HTTP request */
if (strncmp(url, "mgr:", 4) == 0) {
char *t = xstrdup(url + 4);
snprintf(url, BUFSIZ, "cache_object://%s/%s", hostname, t);
xfree(t);
}
if (put_file) {
put_fd = open(put_file, O_RDONLY);
set_our_signal();
if (put_fd < 0) {
fprintf(stderr, "%s: can't open file (%s)\n", argv[0],
xstrerror());
exit(-1);
}
#ifdef _SQUID_WIN32_
setmode(put_fd, O_BINARY);
#endif
fstat(put_fd, &sb);
}
snprintf(msg, BUFSIZ, "%s %s HTTP/1.0\r\n", method, url);
if (reload) {
snprintf(buf, BUFSIZ, "Pragma: no-cache\r\n");
strcat(msg, buf);
}
if (put_fd > 0) {
snprintf(buf, BUFSIZ, "Content-length: %d\r\n", (int) sb.st_size);
strcat(msg, buf);
}
if (opt_noaccept == 0) {
snprintf(buf, BUFSIZ, "Accept: */*\r\n");
strcat(msg, buf);
}
if (ims) {
snprintf(buf, BUFSIZ, "If-Modified-Since: %s\r\n", mkrfc1123(ims));
strcat(msg, buf);
}
if (max_forwards > -1) {
snprintf(buf, BUFSIZ, "Max-Forwards: %d\r\n", max_forwards);
strcat(msg, buf);
}
if (proxy_user) {
char *user = proxy_user;
char *password = proxy_password;
#if HAVE_GETPASS
if (!password)
password = getpass("Proxy password: "******"ERROR: Proxy password missing\n");
exit(1);
}
snprintf(buf, BUFSIZ, "%s:%s", user, password);
snprintf(buf, BUFSIZ, "Proxy-Authorization: Basic %s\r\n", base64_encode(buf));
strcat(msg, buf);
}
if (www_user) {
char *user = www_user;
char *password = www_password;
#if HAVE_GETPASS
if (!password)
password = getpass("WWW password: "******"ERROR: WWW password missing\n");
exit(1);
}
snprintf(buf, BUFSIZ, "%s:%s", user, password);
snprintf(buf, BUFSIZ, "Authorization: Basic %s\r\n", base64_encode(buf));
strcat(msg, buf);
}
if (keep_alive) {
if (port != 80)
snprintf(buf, BUFSIZ, "Proxy-Connection: keep-alive\r\n");
else
snprintf(buf, BUFSIZ, "Connection: keep-alive\r\n");
strcat(msg, buf);
}
strcat(msg, extra_hdrs);
snprintf(buf, BUFSIZ, "\r\n");
strcat(msg, buf);
if (opt_verbose)
fprintf(stderr, "headers: '%s'\n", msg);
if (ping) {
#if HAVE_SIGACTION
struct sigaction sa, osa;
if (sigaction(SIGINT, NULL, &osa) == 0 && osa.sa_handler == SIG_DFL) {
sa.sa_handler = catchSignal;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
(void) sigaction(SIGINT, &sa, NULL);
}
#else
void (*osig) ();
if ((osig = signal(SIGINT, catchSignal)) != SIG_DFL)
(void) signal(SIGINT, osig);
#endif
}
loops = ping ? pcount : 1;
for (i = 0; loops == 0 || i < loops; i++) {
squid_off_t fsize = 0;
/* Connect to the server */
if ((conn = socket(PF_INET, SOCK_STREAM, 0)) < 0) {
perror("client: socket");
exit(1);
}
if (localhost && client_comm_bind(conn, localhost) < 0) {
perror("client: bind");
exit(1);
}
if (client_comm_connect(conn, hostname, port, (ping || opt_verbose) ? &tv1 : NULL) < 0) {
if (errno == 0) {
fprintf(stderr, "client: ERROR: Cannot connect to %s:%d: Host unknown.\n", hostname, port);
} else {
char tbuf[BUFSIZ];
snprintf(tbuf, BUFSIZ, "client: ERROR: Cannot connect to %s:%d",
hostname, port);
perror(tbuf);
}
exit(1);
}
/* Send the HTTP request */
bytesWritten = mywrite(conn, msg, strlen(msg));
if (bytesWritten < 0) {
perror("client: ERROR: write");
exit(1);
} else if (bytesWritten != strlen(msg)) {
fprintf(stderr, "client: ERROR: Cannot send request?: %s\n", msg);
exit(1);
}
if (put_file) {
int x;
lseek(put_fd, 0, SEEK_SET);
#ifdef _SQUID_MSWIN_
while ((x = read(put_fd, buf, sizeof(buf))) > 0) {
#else
while ((x = myread(put_fd, buf, sizeof(buf))) > 0) {
#endif
x = mywrite(conn, buf, x);
total_bytes += x;
if (x <= 0)
break;
}
if (x != 0)
fprintf(stderr, "client: ERROR: Cannot send file.\n");
}
/* Read the data */
#ifdef _SQUID_MSWIN_
setmode(1, O_BINARY);
#endif
while ((len = myread(conn, buf, sizeof(buf))) > 0) {
fsize += len;
if (to_stdout)
fwrite(buf, len, 1, stdout);
}
#ifdef _SQUID_MSWIN_
setmode(1, O_TEXT);
#endif
(void) close(conn); /* done with socket */
if (interrupted)
break;
if (ping || opt_verbose) {
struct tm *tmp;
time_t t2s;
long elapsed_msec;
(void) Now(&tv2);
elapsed_msec = tvSubMsec(tv1, tv2);
t2s = tv2.tv_sec;
tmp = localtime(&t2s);
fprintf(stderr, "%d-%02d-%02d %02d:%02d:%02d [%d]: %ld.%03ld secs, %f KB/s (%" PRINTF_OFF_T "KB)\n",
tmp->tm_year + 1900, tmp->tm_mon + 1, tmp->tm_mday,
tmp->tm_hour, tmp->tm_min, tmp->tm_sec, i + 1,
elapsed_msec / 1000, elapsed_msec % 1000,
elapsed_msec ? (double) fsize / elapsed_msec * 1000 / 1024 : -1.0,
(fsize + 1023) / 1024);
if (i == 0 || elapsed_msec < ping_min)
ping_min = elapsed_msec;
if (i == 0 || elapsed_msec > ping_max)
ping_max = elapsed_msec;
ping_sum += elapsed_msec;
/* Delay until next "ping_int" boundary */
if (ping && (loops == 0 || i + 1 < loops) && elapsed_msec < ping_int) {
struct timeval tvs;
long msec_left = ping_int - elapsed_msec;
tvs.tv_sec = msec_left / 1000;
tvs.tv_usec = (msec_left % 1000) * 1000;
select(0, NULL, NULL, NULL, &tvs);
}
}
}
if (ping && i) {
ping_mean = ping_sum / i;
fprintf(stderr, "%d requests, round-trip (secs) min/avg/max = "
"%ld.%03ld/%ld.%03ld/%ld.%03ld\n", i,
ping_min / 1000, ping_min % 1000, ping_mean / 1000, ping_mean % 1000,
ping_max / 1000, ping_max % 1000);
}
exit(0);
/*NOTREACHED */
return 0;
}
static int
client_comm_bind(int sock, const char *local_host)
{
static const struct hostent *hp = NULL;
static struct sockaddr_in from_addr;
/* Set up the source socket address from which to send. */
if (hp == NULL) {
from_addr.sin_family = AF_INET;
if ((hp = gethostbyname(local_host)) == 0) {
return (-1);
}
xmemcpy(&from_addr.sin_addr, hp->h_addr, hp->h_length);
from_addr.sin_port = 0;
}
return bind(sock, (struct sockaddr *) &from_addr, sizeof(struct sockaddr_in));
}
static int
client_comm_connect(int sock, const char *dest_host, u_short dest_port, struct timeval *tvp)
{
static const struct hostent *hp = NULL;
static struct sockaddr_in to_addr;
/* Set up the destination socket address for message to send to. */
if (hp == NULL) {
to_addr.sin_family = AF_INET;
if ((hp = gethostbyname(dest_host)) == 0) {
return (-1);
}
xmemcpy(&to_addr.sin_addr, hp->h_addr, hp->h_length);
to_addr.sin_port = htons(dest_port);
}
if (tvp)
(void) Now(tvp);
return connect(sock, (struct sockaddr *) &to_addr, sizeof(struct sockaddr_in));
}
static int
Now(struct timeval *tp)
{
#if GETTIMEOFDAY_NO_TZP
return gettimeofday(tp);
#else
return gettimeofday(tp, NULL);
#endif
} /* ARGSUSED */
static void
catchSignal(int sig)
{
interrupted = 1;
fprintf(stderr, "Interrupted.\n");
}
/* return 1 if the entry must be revalidated within delta seconds
* 0 otherwise
*
* note: request maybe null (e.g. for cache digests build)
*/
static int
refreshCheck(const StoreEntry * entry, request_t * request, time_t delta)
{
const refresh_t *R;
const char *uri = NULL;
time_t age = 0;
time_t check_time = squid_curtime;
int staleness;
stale_flags sf;
if (entry->mem_obj)
uri = entry->mem_obj->url;
else if (request)
uri = urlCanonical(request);
debug(22, 3) ("refreshCheck: '%s'\n", uri ? uri : "<none>");
if (delta > 0)
check_time += delta;
if (check_time > entry->timestamp)
age = check_time - entry->timestamp;
R = uri ? refreshLimits(uri) : refreshUncompiledPattern(".");
if (NULL == R)
R = &DefaultRefresh;
memset(&sf, '\0', sizeof(sf));
staleness = refreshStaleness(entry, check_time, age, R, &sf);
debug(22, 3) ("Staleness = %d\n", staleness);
debug(22, 3) ("refreshCheck: Matched '%s %d %d%% %d'\n",
R->pattern, (int) R->min, (int) (100.0 * R->pct), (int) R->max);
debug(22, 3) ("refreshCheck: age = %d\n", (int) age);
debug(22, 3) ("\tcheck_time:\t%s\n", mkrfc1123(check_time));
debug(22, 3) ("\tentry->timestamp:\t%s\n", mkrfc1123(entry->timestamp));
if (EBIT_TEST(entry->flags, ENTRY_REVALIDATE) && staleness > -1) {
debug(22, 3) ("refreshCheck: YES: Must revalidate stale response\n");
return STALE_MUST_REVALIDATE;
}
/* request-specific checks */
if (request) {
HttpHdrCc *cc = request->cache_control;
#if HTTP_VIOLATIONS
if (!request->flags.nocache_hack) {
(void) 0;
} else if (R->flags.ignore_reload) {
/* The clients no-cache header is ignored */
debug(22, 3) ("refreshCheck: MAYBE: ignore-reload\n");
} else if (R->flags.reload_into_ims || Config.onoff.reload_into_ims) {
/* The clients no-cache header is changed into a IMS query */
debug(22, 3) ("refreshCheck: YES: reload-into-ims\n");
return STALE_RELOAD_INTO_IMS;
} else {
/* The clients no-cache header is not overridden on this request */
debug(22, 3) ("refreshCheck: YES: client reload\n");
request->flags.nocache = 1;
return STALE_FORCED_RELOAD;
}
#endif
if (NULL != cc) {
if (cc->max_age > -1) {
#if HTTP_VIOLATIONS
if (R->flags.ignore_reload && cc->max_age == 0) {
} else
#endif
if (age > cc->max_age) {
debug(22, 3) ("refreshCheck: YES: age > client-max-age\n");
return STALE_EXCEEDS_REQUEST_MAX_AGE_VALUE;
}
}
if (EBIT_TEST(cc->mask, CC_MAX_STALE) && staleness >= 0) {
if (cc->max_stale < 0) {
/* max-stale directive without a value */
debug(22, 3) ("refreshCheck: NO: max-stale wildcard\n");
return FRESH_REQUEST_MAX_STALE_ALL;
} else if (staleness < cc->max_stale) {
debug(22, 3) ("refreshCheck: NO: staleness < max-stale\n");
return FRESH_REQUEST_MAX_STALE_VALUE;
}
}
}
}
if (staleness < 0) {
if (sf.expires)
return FRESH_EXPIRES;
assert(!sf.max);
if (sf.lmfactor)
return FRESH_LMFACTOR_RULE;
assert(sf.min);
return FRESH_MIN_RULE;
}
/*
* At this point the response is stale, unless one of
* the override options kicks in.
*/
if (delta < 0 && staleness + delta < 0) {
return STALE_WITHIN_DELTA;
}
if (sf.expires) {
#if HTTP_VIOLATIONS
if (R->flags.override_expire && age < R->min) {
debug(22, 3) ("refreshCheck: NO: age < min && override-expire\n");
return FRESH_OVERRIDE_EXPIRES;
}
#endif
return STALE_EXPIRES;
}
if (sf.max)
return STALE_MAX_RULE;
if (sf.lmfactor) {
#if HTTP_VIOLATIONS
if (R->flags.override_lastmod && age < R->min) {
debug(22, 3) ("refreshCheck: NO: age < min && override-lastmod\n");
return FRESH_OVERRIDE_LASTMOD;
}
#endif
return STALE_LMFACTOR_RULE;
}
return STALE_DEFAULT;
}
/*
* Calculate how stale the response is (or will be at the check_time).
* Staleness calculation is based on the following: (1) response
* expiration time, (2) age greater than configured maximum, (3)
* last-modified factor, and (4) age less than configured minimum.
*
* If the response is fresh, return -1. Otherwise return its
* staleness. NOTE return value of 0 means the response is stale.
*
* The 'stale_flags' structure is used to tell the calling function
* _why_ this response is fresh or stale. Its used, for example,
* when the admin wants to override expiration and last-modified
* times.
*/
static int
refreshStaleness(const StoreEntry * entry, time_t check_time, time_t age, const refresh_t * R, stale_flags * sf)
{
/*
* Check for an explicit expiration time.
*/
if (entry->expires > -1) {
sf->expires = 1;
if (entry->expires > check_time) {
debug(22, 3) ("FRESH: expires %d >= check_time %d \n",
(int) entry->expires, (int) check_time);
return -1;
} else {
debug(22, 3) ("STALE: expires %d < check_time %d \n",
(int) entry->expires, (int) check_time);
return (check_time - entry->expires);
}
}
assert(age >= 0);
/*
* Use local heuristics to determine staleness. Start with the
* max age from the refresh_pattern rule.
*/
if (age > R->max) {
debug(22, 3) ("STALE: age %d > max %d \n", (int) age, (int) R->max);
sf->max = 1;
return (age - R->max);
}
if (check_time < entry->timestamp) {
debug(22, 1) ("STALE: Entry's timestamp greater than check time. Clock going backwards?\n");
debug(22, 1) ("\tcheck_time:\t%s\n", mkrfc1123(check_time));
debug(22, 1) ("\tentry->timestamp:\t%s\n", mkrfc1123(entry->timestamp));
debug(22, 1) ("\tstaleness:\t%ld\n", (long int) entry->timestamp - check_time);
return (entry->timestamp - check_time);
}
/*
* Try the last-modified factor algorithm.
*/
if (entry->lastmod > -1 && entry->timestamp > entry->lastmod) {
/*
* stale_age is the Age of the response when it became/becomes
* stale according to the last-modified factor algorithm.
*/
time_t stale_age = (entry->timestamp - entry->lastmod) * R->pct;
sf->lmfactor = 1;
if (age >= stale_age) {
debug(22, 3) ("STALE: age %d > stale_age %d\n",
(int) age, (int) stale_age);
return (age - stale_age);
} else {
debug(22, 3) ("FRESH: age %d <= stale_age %d\n",
(int) age, (int) stale_age);
return -1;
}
}
/*
* If we are here, staleness is determined by the refresh_pattern
* configured minimum age.
*/
if (age <= R->min) {
debug(22, 3) ("FRESH: age %d <= min %d\n", (int) age, (int) R->min);
sf->min = 1;
return -1;
}
debug(22, 3) ("STALE: age %d > min %d\n", (int) age, (int) R->min);
return (age - R->min);
}
